The HVMOP_inject_msi function in Xen 4.2.x, 4.3.x, and 4.4.x does not properly check the return value from the IRQ setup check, which allows local HVM guest administrators to cause a denial of service (NULL pointer dereference and crash) via unspecified vectors.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2014-3967 from the MITRE CVE dictionary dictionary and NIST NVD.
Not vulnerable.
This issue did not affect the versions of the kernel-xen package as
shipped with Red Hat Enterprise Linux 5.
This issue did not affect Red Hat Enterprise Linux 6 and Red Hat
Enterprise MRG 2 as we did not have support for Xen hypervisor.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 5.2 |
|---|---|
| Base Metrics | AV:A/AC:M/Au:S/C:N/I:N/A:C |
| Access Vector | Adjacent Network |
| Access Complexity | Medium |
| Authentication | Single |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Complete |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-xen | Not affected |
Vulmon